期刊
LEUKEMIA & LYMPHOMA
卷 53, 期 2, 页码 254-258出版社
INFORMA HEALTHCARE
DOI: 10.3109/10428194.2011.608445
关键词
Radioimmunotherapy; proteasome inhibitor; mantle cell lymphoma; non-Hodgkin lymphoma; ibritumomab tiuxetan
资金
- Biogen Idec
- Millennium Pharmaceuticals
Proteasome inhibitors may inhibit DNA repair of radiation-induced strand breaks and adducts thereby making the combination of radioimmunotherapy and bortezomib a promising approach. Preclinical models demonstrate additive/synergistic effects from combining DNA damaging agents with proteasome inhibitors. This phase I trial combines ibritumomab tiuxetan with bortezomib. Twelve patients with relapsed/refractory mantle cell and low grade B-cell non-Hodgkin lymphoma were enrolled. Patients with prior radioimmunotherapy were prohibited. The maximum tolerated dose (MTD) was not reached. No dose limiting toxicities (DLTs) occurred in cohort 1 or 2. One of six patients on cohort 3 had DLTs of asthenia, dizziness and neuropathy. Grade 3/4 thrombocytopenia occurred in two patients (16%) and grade 3/4 neutropenia in three patients (25%). Five subjects (41.7%) had complete responses (CRs) and one patient had a partial response (8.3%) for an overall response rate (ORR) of 50%. The combination of standard dose ibritumomab tiuxetan and bortezomib at 1.5 mg/m(2) is well tolerated with a promising response rate.
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